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Casillas-Popova SN, Lokuge ND, Andrade-Gagnon B, Chowdhury FR, Skinner CD, Findlay BL, Oh JK. pH-Responsive Degradable Electro-Spun Nanofibers Crosslinked via Boronic Ester Chemistry for Smart Wound Dressings. Macromol Biosci 2024:e2400217. [PMID: 38989606 DOI: 10.1002/mabi.202400217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/18/2024] [Indexed: 07/12/2024]
Abstract
Recent advances in the treatment of chronic wounds have focused on the development of effective strategies for cutting-edge wound dressings based on nanostructured materials, particularly biocompatible poly(vinyl alcohol) (PVA)-based electro-spun (e-spun) nanofibers. However, PVA nanofibers need to be chemically crosslinked to ensure their dimensional stability in aqueous environment and their capability to encapsulate bioactive molecules. Herein, a robust approach for the fabrication of pH-degradable e-spun PVA nanofibers crosslinked with dynamic boronic ester (BE) linkages through a coupling reaction of PVA hydroxyl groups with the boronic acid groups of a phenyl diboronic acid crosslinker is reported. This comprehensive analysis reveals the importance of the mole ratio of boronic acid to hydroxyl group for the fabrication of well-defined BE-crosslinked fibrous mats with not only dimensional stability but also the ability to retain uniform fibrous form in aqueous solutions. These nanofibers degrade in both acidic and basic conditions that mimic wound environments, leading to controlled/enhanced release of encapsulated antimicrobial drug molecules. More importantly, drug-loaded BE-crosslinked fibers show excellent antimicrobial activities against both Gram-positive and Gram-negative bacteria, suggesting that this approach of exploring dynamic BE chemistry is amenable to the development of smart wound dressings with controlled/enhanced drug release.
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Affiliation(s)
| | - Nishadi Dilkushi Lokuge
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Brandon Andrade-Gagnon
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | | | - Cameron D Skinner
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Brandon L Findlay
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
- Department of Biology, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
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Guerra M, Garrudo FFF, Faustino C, Rosa ME, Ribeiro MHL. Exploring Functionalized Magnetic Hydrogel Polyvinyl Alcohol and Chitosan Electrospun Nanofibers. Gels 2023; 9:968. [PMID: 38131954 PMCID: PMC10743178 DOI: 10.3390/gels9120968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023] Open
Abstract
Nanofibrous materials present interesting characteristics, such as higher area/mass ratio and reactivity. These properties have been exploited in different applications, such as drug-controlled release and site-specific targeting of biomolecules for several disease treatments, including cancer. The main goal of this study was to develop magnetized nanofiber systems of lysozyme (Lys) for biological applications. The system envisaged electrospun polyvinyl alcohol (PVA) and PVA/chitosan (CS) nanofibers, loaded with Lys, crosslinked with boronic acids [phenylboronic acid (PBA), including 2-acetylphenylboronic acid (aPBA), 2-formylphenylboronic (fPBA), or bortezomib (BTZ)] and functionalized with magnetic nanobeads (IONPs), which was successfully built and tested using a microscale approach. Evaluation of the morphology of nanofibers, obtained by electrospinning, was carried out using SEM. The biological activities of the Lys-loaded PVA/CS (90:10 and 70:30) nanofibers were evaluated using the Micrococcus lysodeikticus method. To evaluate the success of the encapsulation process, the ratio of adsorbed Lys on the nanofibers, Lys activity, and in vitro Lys release were determined in buffer solution at pH values mimicking the environment of cancer cells. The viability of Caco-2 cancer cells was evaluated after being in contact with electrospun PVA + Lys and PVA/CS + Lys nanofibers, with or without boronic acid functionalation, and all were magnetized with IONPs.
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Affiliation(s)
- Mónica Guerra
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
| | - Fábio F. F. Garrudo
- Department of Bioengineering, Institute of Telecomunications, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Célia Faustino
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Maria Emilia Rosa
- Instituto de Engenharia Mecânica (IDMEC), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - Maria H. L. Ribeiro
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (M.G.); (C.F.)
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
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Daniels EL, Runge JR, Oshinowo M, Leese HS, Buchard A. Cross-Linking of Sugar-Derived Polyethers and Boronic Acids for Renewable, Self-Healing, and Single-Ion Conducting Organogel Polymer Electrolytes. ACS APPLIED ENERGY MATERIALS 2023; 6:2924-2935. [PMID: 36936513 PMCID: PMC10015429 DOI: 10.1021/acsaem.2c03937] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/10/2023] [Indexed: 06/16/2023]
Abstract
This report describes the synthesis and characterization of organogels by reaction of a diol-containing polyether, derived from the sugar d-xylose, with 1,4-phenylenediboronic acid (PDBA). The cross-linked materials were analyzed by infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), scanning electron microscopy (FE-SEM), and rheology. The rheological material properties could be tuned: gel or viscoelastic behavior depended on the concentration of polymer, and mechanical stiffness increased with the amount of PDBA cross-linker. Organogels demonstrated self-healing capabilities and recovered their storage and loss moduli instantaneously after application and subsequent strain release. Lithiated organogels were synthesized through incorporation of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) into the cross-linked matrix. These lithium-borate polymer gels showed a high ionic conductivity value of up to 3.71 × 10-3 S cm-1 at 25 °C, high lithium transference numbers (t + = 0.88-0.92), and electrochemical stability (4.51 V). The gels were compatible with lithium-metal electrodes, showing stable polarization profiles in plating/stripping tests. This system provides a promising platform for the production of self-healing gel polymer electrolytes (GPEs) derived from renewable feedstocks for battery applications.
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Affiliation(s)
- Emma L. Daniels
- University
of Bath Institute for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
- Materials
for Health Lab, Department of Chemical Engineering, University of Bath, Claverton
Down, Bath BA2 7AY, U.K.
| | - James R. Runge
- University
of Bath Institute for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Matthew Oshinowo
- University
of Bath Institute for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
| | - Hannah S. Leese
- University
of Bath Institute for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
- Materials
for Health Lab, Department of Chemical Engineering, University of Bath, Claverton
Down, Bath BA2 7AY, U.K.
| | - Antoine Buchard
- University
of Bath Institute for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
- Department
of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
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Menegatti T, Žnidaršič-Plazl P. Hydrogel-Based Enzyme and Cofactor Co-Immobilization for Efficient Continuous Transamination in a Microbioreactor. Front Bioeng Biotechnol 2021; 9:752064. [PMID: 34805109 PMCID: PMC8599124 DOI: 10.3389/fbioe.2021.752064] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 10/11/2021] [Indexed: 01/30/2023] Open
Abstract
A microbioreactor was developed in which selected amine transaminase was immobilized together with the cofactor pyridoxal phosphate (PLP) to allow efficient continuous transamination. The enzyme and cofactor were retained in a porous copolymeric hydrogel matrix formed in a two-plate microreactor with an immobilization efficiency of over 97%. After 10 days of continuous operation, 92% of the initial productivity was retained and no leaching of PLP or enzyme from the hydrogel was observed. The microbioreactor with co-immobilized cofactor showed similar performance with and without the addition of exogenous PLP, suggesting that the addition of PLP is not required during the process. The space-time yield of the microbioreactor was 19.91 g L−1 h−1, while the highest achieved biocatalyst productivity was 5.4 mg mgenzyme−1 h−1. The immobilized enzyme also showed better stability over a wider pH and temperature range than the free enzyme. Considering the time and cost efficiency of the immobilization process and the possibility of capacity expansion, such a system is of great potential for industrial application.
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Affiliation(s)
- Tadej Menegatti
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Polona Žnidaršič-Plazl
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia.,Chair of Microprocess Engineering and Technology-COMPETE, University of Ljubljana, Ljubljana, Slovenia
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Nishiyabu R, Takahashi Y, Yabuki T, Gommori S, Yamamoto Y, Kitagishi H, Kubo Y. Boronate sol-gel method for one-step fabrication of polyvinyl alcohol hydrogel coatings by simple cast- and dip-coating techniques. RSC Adv 2019; 10:86-94. [PMID: 35492531 PMCID: PMC9048246 DOI: 10.1039/c9ra08208e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/16/2019] [Indexed: 12/25/2022] Open
Abstract
The self-assembly of polyvinyl alcohol (PVA) and benzene-1,4-diboronic acid (DBA) is employed as a sol–gel method for one-step fabrication of hydrogel coatings with versatile functionalities. A mixture of PVA and DBA in aqueous ethanol is prepared as a coating agent. The long pot life of the mixture allows for the coating of a wide range of materials with hydrogel films by simple cast- and dip-coating techniques. The resultant films show negligible dissolution in water and the intrinsic hydrophilicity of PVA provides the films with functional properties, such as improved antifogging property and resistance to protein and cell fouling. The self-assembling process shows adaptive inclusion properties toward nanoscale materials, such as metal–organic coordination polymers and inorganic nanoparticles, affording composite films. Furthermore, the coating film exhibits a unique secondary functionalization reactivity toward boronic acid-appended fluorescent dyes, through which a variety of materials are converted into fluorescent materials. The self-assembly of polyvinyl alcohol (PVA) and benzene-1,4-diboronic acid (DBA) is employed as a sol–gel method for one-step fabrication of hydrogel coatings with versatile functionalities.![]()
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Affiliation(s)
- Ryuhei Nishiyabu
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
| | - Yuki Takahashi
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
| | - Taro Yabuki
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
| | - Shoji Gommori
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
| | - Yuki Yamamoto
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University Kyotanabe Kyoto 610-0321 Japan
| | - Yuji Kubo
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-ohsawa Hachioji Tokyo 192-0397 Japan
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Copolymeric Hydrogel-Based Immobilization of Yeast Cells for Continuous Biotransformation of Fumaric Acid in a Microreactor. MICROMACHINES 2019; 10:mi10120867. [PMID: 31835518 PMCID: PMC6952971 DOI: 10.3390/mi10120867] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/02/2019] [Accepted: 12/08/2019] [Indexed: 12/19/2022]
Abstract
Although enzymatic microbioreactors have recently gained lots of attention, reports on the use of whole cells as biocatalysts in microreactors have been rather modest. In this work, an efficient microreactor with permeabilized Saccharomyces cerevisiae cells was developed and used for continuous biotransformation of fumaric into industrially relevant L-malic acid. The immobilization of yeast cells was achieved by entrapment in a porous structure of various hydrogels. Copolymers based on different ratios of sodium alginate (SA) and polyvinyl alcohol (PVA) were used for hydrogel formation, while calcium chloride and boric or phenylboronic acid were tested as crosslinking agents for SA and PVA, respectively. The influence of hydrogel composition on physico-chemical properties of hydrogels prepared in the form of thin films was evaluated. Immobilization of permeabilized S. cerevisiae cells in the selected copolymeric hydrogel resulted in up to 72% retained fumarase activity. The continuous biotransformation process using two layers of hydrogels integrated into a two-plate microreactor revealed high space time yield of 2.86 g/(L·h) while no activity loss was recorded during 7 days of continuous operation.
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Larkin JD, Bock CW. A comparison of the structure and bonding in the donor–acceptor complexes H3N → BR(OH)2 and H3N → BRH(OH) (R = H; NH2, OH, and F): a computational investigation. Struct Chem 2019. [DOI: 10.1007/s11224-018-1205-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Immobilization of the β-fructofuranosidase from Xanthophyllomyces dendrorhous by Entrapment in Polyvinyl Alcohol and Its Application to Neo-Fructooligosaccharides Production. Catalysts 2018. [DOI: 10.3390/catal8050201] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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9
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Influence of length and structure of aryl boronic acid crosslinkers on organogels with partially hydrolyzed poly(vinyl acetate). Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4326-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Xu S, Shen L, Li C, Wang Y. Properties and pervaporation performance of poly(vinyl alcohol) membranes crosslinked with various dianhydrides. J Appl Polym Sci 2018. [DOI: 10.1002/app.46159] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sheng Xu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology; Wuhan 430074 China
| | - Liang Shen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology; Wuhan 430074 China
| | - Cailian Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
| | - Yan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Ministry of Education; Wuhan 430074 China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology; Wuhan 430074 China
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Duncan TT, Berrie BH, Weiss RG. Soft, Peelable Organogels from Partially Hydrolyzed Poly(vinyl acetate) and Benzene-1,4-diboronic Acid: Applications to Clean Works of Art. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28069-28078. [PMID: 28787129 DOI: 10.1021/acsami.7b09473] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have developed soft, peelable organogels from 40% hydrolyzed poly(vinyl acetate) (40PVAc) and benzene-1,4-diboronic acid (BDBA). The organic liquids gelated include dimethyl sulfoxide, dimethylformamide, tetrahydrofuran, 2-ethoxyethanol, and methanol. The rheology of these soft materials can be tuned by altering the concentration of the polymer and/or crosslinker. Insights into the mechanisms leading to gelation were obtained from 1H NMR experiments, fluorescence measurements, and studies comparing properties of materials made from BDBA and phenylboronic acid, a molecule incapable of forming covalent crosslinks between the polymer chains. These organogels can be easily peeled off a surface, leaving no residue detectable by UV-vis spectroscopy. They are demonstrated to be effective at softening and removing deteriorated coatings from water-sensitive works of art and delicate surfaces. They have the needed characteristics to clean topographically complex surfaces: good contact with the surface, easy removal, and little to no residue after removal. A 2-ethoxyethanol organogel was used to remove oxidized varnish from a 16th century reliquary decorated with painted gold leaf, and an ethanol gel was used to remove solvent-resistant coatings from 16th and 18th century oil paintings.
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Affiliation(s)
| | - Barbara H Berrie
- Conservation Division, National Gallery of Art , Washington, DC 20565, United States
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